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Achelous River — Current Water Temperature, Annual Trends and Forecast

This page provides information on the current water temperature in the Achelous River, trends, monthly ranges and the forecast for the coming days.

Achelous River, Greece
Achelous River, Greece © By Georgios Pazios, Attribution

Current Water Temperature

24.8°C
Today
24.5°C
Yesterday
23.4°C
A Week Ago
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Water Temperature in the Achelous River today is 24.8°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.

Water Temperature Chart Over the Last 30 Days

From May 31 to July 1

Table of Daily Sea Temperature Data

Date Current Average Forecast
JUN 2323.4°C21.0°C
JUN 2423.4°C21.0°C
JUN 2523.8°C21.0°C
JUN 2623.8°C21.0°C
JUN 2723.8°C21.0°C
JUN 2823.8°C21.0°C
JUN 2924.5°C21.0°C
JUN 3024.8°C21.0°C
JUL 123.0°C24.7°C
JUL 223.0°C24.6°C
JUL 323.0°C24.5°C
JUL 423.0°C24.4°C
JUL 523.0°C24.4°C
JUL 623.0°C24.3°C
JUL 723.0°C24.2°C

* Current - Actual water temperature value

** Average - Average water temperature on this day in recent years

*** Forecast - Our water temperature forecast

Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.

Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.

Monthly Water Temperature Range (Min, Max & Average)

Month Min Avg Max
January6°C9°C12°C
February6°C9°C12°C
March6°C9°C12°C
April9°C13°C18°C
May13°C18°C22°C
June17°C21°C26°C
July18°C23°C27°C
August19°C24°C28°C
September18°C22°C27°C
October12°C16°C18°C
November9°C13°C16°C
December8°C11°C14°C

Achelous River: Water Temperature by Location

Achelous River: Weather Forecast

July 1

° / °
partly cloudy
rain: 11% | wind:

July 2

° / °
overcast
rain: 29% | wind:

July 3

° / °
overcast
rain: 7% | wind:

July 4

° / °
slight thunderstorm
rain: 53% | wind:

Location & Local Information

Source:
• location Pindus mountains
• coordinates 39°41′13″N 21°8′31″E
Mouth:
• location Ionian Sea
• coordinates 38°19′53″N 21°6′5″E
Length 220 km (140 mi)

The Achelous (Greek: Αχελώος), flowing through Epirus from the Pindus mountains toward the Ionian plain, shows marked seasonal and local variation in water temperature. In winter the river is cold, commonly around 4–8 °C (39–46 °F) in upland reaches fed by snowmelt; spring temperatures rise to roughly 6–14 °C (43–57 °F) as flows moderate. In summer lowland and sun-exposed pools typically warm to about 16–24 °C (61–75 °F), and on hot, shallow reaches temperatures can locally approach 26–27 °C (79–81 °F). Autumn cooling brings temperatures back toward roughly 10–18 °C (50–64 °F). Microclimates created by deep gorges, shaded canyons, or cold springs mean that temperatures can vary substantially over short distances.

Swimming is commonly possible in many accessible stretches of the Achelous, especially in calm bends and natural pools during summer, but it is not uniformly advisable everywhere. Local restrictions occasionally limit access near infrastructure or protected habitats, and strong currents, cold underflows, sudden depth changes and rising flows after rain pose safety risks. Water quality in rural Epirus is often good, yet swimmers should choose sheltered, frequently used spots, be aware of seasonal cold shock in shoulder seasons, and follow local guidance for safe swimming.

Nearby Rivers

Frequently Asked Questions

What is the current water temperature in the Achelous River?
Water Temperature in the Achelous River today is 24.8°C.
What is the water temperature in the Achelous River during the summer months?
The water temperature in the Achelous River in summer fluctuates in the range of 17°C - 28°C.
Is it possible to swim in Achelous (Greece) and what are the possibilities for this?
Swimming in the Achelous River is possible in certain locations—most commonly in clear mountain pools, calm mid‑river stretches and reservoirs formed by dams—whereas the lower marshy delta, silty or fast‑flowing sections and protected areas are often unsuitable or sensitive, so always check local conditions, access and water quality before entering.